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West Yost presents on Integrated Water Flow Model
Yolo County IWFM: Calibration and Model Application for Developing Conjunctive Use Framework in an Aquifer-Floodplain Recharge Operation

West Yost, as a participant in the Calibration and Model Application for Developing Conjunctive Use Framework in an Aquifer-Floodplain Recharge Operation in Yolo County is a collaborator on an upcoming presentation at the California Water & Environmental Modeling Forum’s 2014 Annual Meeting, February 24 – 26, in Folsom, California.

This presentation addresses how the Integrated Water Flow Model (IWFM) was used to explore aquifer-floodplain recharge operations for conjunctive use in Yolo County as a study case. Conjunctive water use is of high interest today. The use of groundwater storage during dry periods of time, when the lack of surface water constrains the diverse water uses, is an alternative to increase the water availability to meet water demand. Full benefits of conjunctive use can be achieved when excess surface water during wet years can be recharged into the groundwater. This is done normally in upgradient areas, but in many other cases, the water for recharge is only available in downgradient zones, such as the Yolo Bypass, a floodplain area where the hydrogeology is semi-confined with a shallow water table. The Integrated Water Flow Model (IWFM) was used to explore aquifer-floodplain recharge operations for conjunctive use in Yolo County as a study case. For that purpose, the model was updated and calibrated to recent data. Modeling suggest that a promising conjunctive use framework could be developed in the Yolo Bypass with countywide benefits, by storing excess water from the Sacramento River during flooding seasons, and a pumping scheme in the bypass that would reverse the ambient groundwater flow creating space for recharge. Increased groundwater storage could then be recovered for extraction during dry periods.

Carlos Flores, of UC Davis, is the presenter at the conference and Ken Loy, of West Yost Associates is a key collaborator on the project.

The following is a link to the conference website.
https://sites.google.com/site/cwemf2014annualmeeting/

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